EP0954660B1 - Bande plate lamellaire pour renforcer des elements de construction et son procede de fabrication - Google Patents

Bande plate lamellaire pour renforcer des elements de construction et son procede de fabrication Download PDF

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Publication number
EP0954660B1
EP0954660B1 EP98907958A EP98907958A EP0954660B1 EP 0954660 B1 EP0954660 B1 EP 0954660B1 EP 98907958 A EP98907958 A EP 98907958A EP 98907958 A EP98907958 A EP 98907958A EP 0954660 B1 EP0954660 B1 EP 0954660B1
Authority
EP
European Patent Office
Prior art keywords
lamella
flat strip
reinforcing fibers
angle
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98907958A
Other languages
German (de)
English (en)
Other versions
EP0954660A1 (fr
Inventor
Alexander Bleibler
Ernesto Schümperli
Werner Steiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sika Schweiz AG
Sika AG
Original Assignee
Sika AG
Sika AG Vorm Kaspar Winkler and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19733065A external-priority patent/DE19733065A1/de
Application filed by Sika AG, Sika AG Vorm Kaspar Winkler and Co filed Critical Sika AG
Publication of EP0954660A1 publication Critical patent/EP0954660A1/fr
Application granted granted Critical
Publication of EP0954660B1 publication Critical patent/EP0954660B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/16—Two dimensionally sectional layer
    • Y10T428/163—Next to unitary web or sheet of equal or greater extent
    • Y10T428/164—Continuous two dimensionally sectional layer
    • Y10T428/167—Cellulosic sections [e.g., parquet floor, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777—Edge feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel

Definitions

  • the invention relates to a flat strip slat for reinforcing load-bearing or load-bearing components that form a composite structure a multiplicity of flexible or limp limbs which are aligned parallel to one another Carrying fibers and one that connects the supporting fibers in a shear-resistant manner Has binder matrix, and the broadside by means of an adhesive can be attached to the surface of the component to be reinforced.
  • the invention also relates to a method for producing such flat strip slats.
  • Reinforcement slats of this type are known, for example, from WO 96/21785.
  • the reinforcement slats are there on elongated and / or flat building parts used.
  • the one from a stiff elastic Duroplastic, for example made of epoxy resin binder matrix no bends with small bend radii, so that over a component edge thus far, bow-like reinforcements have not been possible were.
  • bow-shaped reinforcements are needed to in the case of reinforced concrete beams and reinforced concrete slab beams, the relationship between to secure the pressure and tension zone and shear and transverse cracks too avoid.
  • the object of the invention is a flat strip lamella to develop a cross-edge reinforcement of Components enabled.
  • Another object of the invention is Development of processes for the production of such flat ribbon slats.
  • a prefabricated angled lamella is proposed, the two in the area of a transverse to the longitudinal extension of the supporting fibers Cross edge connected in one piece, a defined Has lamella legs enclosing angles of 30 ° to 150 °. Since the component edges to be reinforced are predominantly rectangular the lamella legs form an angle of 90 ° with each other on. To pull across the transverse edge without risk of breakage to be able to transfer, the transverse edge between the lamella legs, expediently with a radius of curvature of 5 to 50 mm, preferably 15 to 30 mm, curved.
  • Binder matrix initially elongated flat strip lamella at least in an intermediate area at a point above the glass transition point lying temperature, for example at a temperature from 300 ° C to 650 ° C, forming two over a transverse edge interconnected lamella legs enclosing an angle exposed to a bending pressure and then temporarily Maintaining the pressing force at the lower operating temperature is cooled.
  • Another procedure according to the invention for producing the angle lamellae consists in a fiber strand consisting of supporting fibers on a support body with preferably square or rectangular Outline wound spirally and fixed to it in the wound state is that the wound fiber strand to form the binder matrix is soaked with a liquid synthetic resin that the synthetic resin with formation a composite tube, preferably designed as a square tube is cured, and that the composite pipe, if necessary after removing the support body with the formation of the angle slats with over Carrying fibers running in the direction of their longitudinal extension several times is cut across and lengthwise.
  • a third method variant according to the invention for producing the angle lamellae consists in the fact that a strand or a fabric of supporting fibers placed in a casting mold with a cross-sectionally angular cavity is that in the cavity liquid binder resin soaking the Carrier fibers are injected or poured in that the binder resin preferably is cured under the influence of pressure and heat and that then the finished angle slats formed from the Casting mold can be removed.
  • the angle lamellae according to the invention can be used for shear reinforcement, tensile reinforcement or buckling protection of reinforced concrete beams, columns or -bars are used, the two angled against each other Legs across a component edge at two, one corresponding Component surfaces enclosing angles with one another by means of an adhesive layer be stuck on.
  • the flat strip lamella shown in FIG. 1 is a prefabricated angle lamella 110 designed to reinforce load-bearing or load-transmitting Components 112 is determined.
  • the angle lamella 110 has two in the area of a transverse to the longitudinal extent of the supporting fibers 126, rounded transverse edge 130 integrally connected to one another Lamella legs 134 enclosing angles of 90 °.
  • the radius of curvature in the region of the transverse edge is, for example, 5 to 50 mm.
  • the angle slats 110 can be used for Reinforcement of load-bearing or load-transmitting components 112 are used, the two angled legs 134 at two enclosing a corresponding angle Surfaces of the component 112 across their corner edges 124 by means of a Adhesive layer, not shown, are glued.
  • the leg ends with each other or with the ends of elongated flat ribbon slats 111 are glued. How from 3c can be seen, can also enclose the component 112 in this way closed reinforcement ring are generated.
  • a first process variant for the production of an angle lamella exists in the fact that an elongated flat strip lamella with a continuous binder matrix in the space forming the transverse edge 130 at a above the glass transition point of the binder matrix Temperature (300 to 600 ° C for epoxy resin) with the formation of the Cross edge 130 interconnected, enclosing an angle Lamellar limb 134 exposed to a bending pressure and then while maintaining the pressing force at the use temperature is cooled.
  • FIGS. 2a to 2c A further production variant is explained with reference to FIGS. 2a to 2c: a Strand of a plurality of carbon fibers aligned parallel to one another 126 is placed on a support body 136 with a square cross section wound and fixed in the wound state on the support body 136 (Fig. 2a). Then the wound fiber strand is formed to form a binder matrix impregnated with liquid synthetic resin. After curing the Synthetic resin creates a composite tube made as a square tube 140, which can be removed from the support body 136 (Fig. 2b). The Square tube can then be cut along the cutting lines 142 and 144 be that angular lamellas 110 arise (Fig. 2c), in which the Carrier fibers 126 in the sense of FIG. 1 over the edge 130 in the direction their longitudinal extent.
  • the invention relates to a Ribbon slat for reinforcing load-bearing or load-transmitting Components. It has a composite structure of a variety of parallel, notched, pliable or pliable support fibers 126 and a binder matrix that connects the supporting fibers in a shear-resistant manner and is broadside on the surface with an adhesive attachable to the component to be reinforced.

Claims (15)

  1. Bande plate lamellaire pour renforcer des éléments de construction soutenant ou transmettant la charge, qui présente une structure composite composée d'une pluralité de fibres de support souples ou relâchées, orientées parallèlement les unes aux autres (126) et d'une matrice de liant reliant les fibres de support entre elles de façon à ce qu'elles résistent au cisaillement, et qui peut être fixée par une colle à la surface côté large de l'élément de construction à consolider (112), caractérisée en ce que l'on utilise une lamelle d'angle préfabriquée (110), qui comporte deux branches de lamelle (134) formant conjointement un angle défini compris entre 30° et 150° et reliées réciproquement d'un seul tenant dans la zone d'une arête transversale (130) s'étendant transversalement à l'extension longitudinale des fibres de support (126).
  2. Bande plate lamellaire selon la revendication 1, caractérisée en ce que les branches de lamelle forment conjointement un angle de 90°.
  3. Bande plate lamellaire selon la revendication 1 ou 2, caractérisée en ce que l'arête transversale (130) entre les branches de lamelle (134) présente un rayon de courbure compris entre 5 et 50 mm, de préférence entre 15 et 30 mm.
  4. Bande plate lamellaire selon l'une des revendications 1 à 3, caractérisée en ce que les fibres de support comprennent des fibres de carbone ou sont conçues en tant que telles.
  5. Bande plate lamellaire selon l'une des revendications 1 à 4, caractérisée en ce que les fibres de support comprennent des fibres d'aramide, des fibres de verre ou des fibres de polypropylène, ou qu'elles sont conçues en tant que telles.
  6. Bande plate lamellaire selon l'une des revendications 1 à 5, caractérisée en ce que la matrice de liant, la colle et le matériau synthétique thermodurcissable se composent d'une résine de réaction.
  7. Bande plate lamellaire selon l'une des revendications 1 à 6, caractérisée en ce que la matrice de liant, la colle et le matériau synthétique thermodurcissable se composent de résine époxyde, de polyuréthane, de résine acrylique ou de résine polyester.
  8. Procédé de fabrication de lamelles d'angle selon l'une des revendications 1 à 7, caractérisé en ce que l'on soumet à une pression de pliage une bande plate lamellaire étirée longitudinalement et comportant une matrice de liant de bout en bout, au moins dans une zone intermédiaire, à une température comprise entre 300 °C et 600 °C, en formant deux branches de lamelle (134) formant conjointement un angle et reliées entre elles par l'intermédiaire d'une arête transversale (130), et qu'enfin, en maintenant un certain temps la force de compression, on la refroidit à la température d'utilisation.
  9. Procédé de fabrication de lamelles d'angle selon l'une des revendications 1 à 7, caractérisé en ce qu'une corde en fibre composée de fibres de support (126) est enroulée en spirales sur un corps d'appui (136) de contour de préférence quadratique ou rectangulaire comportant éventuellement des arêtes d'angles arrondies, et en ce qu'elle est fixée sur celui-ci à l'état enroulé, en ce que l'on imprègne d'une résine synthétique liquide la corde en fibre enroulée en formant la matrice de liant, en ce que la résine synthétique est durcie en formant un tube de matériau composite (140) conçu de préférence sous forme d'un tuyau carré, et en ce que le tube de matériau composite (140) est de préférence multiplement découpé transversalement et longitudinalement, formant ce faisant des lamelles d'angle (110) avec des fibres de support (126) s'étendant en angle en direction de leur extension longitudinale.
  10. Procédé selon la revendication 9, caractérisé en ce que le tube de matériau composite (140) est séparé avant l'enlèvement du corps d'appui (136).
  11. Procédé de fabrication de lamelles d'angle selon l'une des revendications 1 à 7, caractérisé en ce qu'une corde ou un tissu composé(e) de fibres de support est posé(e) en angle dans un moule à fondre avec une cavité de section transversale angulaire, en ce que l'on injecte ou l'on coule dans la cavité un liant de résine liquide en imprégnant les fibres de support, en ce que le liant de résine est durci, de préférence sous l'action de pression et de chaleur, et qu'enfin les lamelles d'angle finies ainsi conçues sont extraites du moule à fondre.
  12. Procédé selon la revendication 11, caractérisé en ce que le liant de résine composé de préférence de résine époxyde est durci à une température comprise entre 100 °C et 200 °C.
  13. Utilisation de la lamelle d'angle selon l'une des revendications 1 à 7 pour renforcer la résistance au cisaillement, la résistance à la traction ou au flambage de poutres, de barres ou de traverses en béton armé, les deux branches réciproquement coudées (134) étant ce faisant collées au moyen d'une couche de colle (116) sur le dessus d'une arête (124) de l'élément de construction concerné, au niveau de deux surfaces d'élément de construction formant conjointement un angle approprié.
  14. Utilisation selon la revendication 13, caractérisée en ce que l'on colle au moyen d'une couche de colle (116) au niveau d'au moins l'une des deux branches de lamelle (134), une seconde bande plate lamellaire (110, 111) à relier à la surface de l'élément de construction concernée de façon à ce qu'elles se chevauchent l'une l'autre.
  15. Utilisation selon la revendication 13 ou 14, caractérisée en ce que l'on colle entres elles et avec les surfaces des éléments de construction de façon à créer un chevauchement réciproque, plusieurs lamelles d'angle (110) et/ou plusieurs bandes plates lamellaires (111) au niveau de leurs extrémités libres, en formant un anneau de renfort fermé de façon à enserrer l'élément de construction (112).
EP98907958A 1997-01-23 1998-01-20 Bande plate lamellaire pour renforcer des elements de construction et son procede de fabrication Expired - Lifetime EP0954660B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19702249 1997-01-23
DE19702249 1997-01-23
DE19733065 1997-07-31
DE19733065A DE19733065A1 (de) 1997-01-23 1997-07-31 Flachband-Lamelle zur Verstärkung von Bauteilen sowie Verfahren zu deren Herstellung
PCT/EP1998/000270 WO1998032933A1 (fr) 1997-01-23 1998-01-20 Bande plate lamellaire pour renforcer des elements de construction et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0954660A1 EP0954660A1 (fr) 1999-11-10
EP0954660B1 true EP0954660B1 (fr) 2001-06-27

Family

ID=26033308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98907958A Expired - Lifetime EP0954660B1 (fr) 1997-01-23 1998-01-20 Bande plate lamellaire pour renforcer des elements de construction et son procede de fabrication

Country Status (6)

Country Link
US (1) US6511727B1 (fr)
EP (1) EP0954660B1 (fr)
JP (1) JP3489839B2 (fr)
AT (1) ATE202614T1 (fr)
AU (1) AU720157B2 (fr)
WO (1) WO1998032933A1 (fr)

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JP3777524B2 (ja) * 1997-08-04 2006-05-24 清水建設株式会社 コンクリート部材の補強構造
DE19903681A1 (de) 1999-01-29 2000-08-03 Sika Ag, Vormals Kaspar Winkler & Co Verfahren zur Herstellung von aus Flachbandlamellen bestehenden winkelförmigen Bauteilen
JP2002129753A (ja) * 2000-10-25 2002-05-09 Nippon Ps:Kk コンクリート構造物の補強方法
JP3861079B2 (ja) * 2003-07-03 2006-12-20 栄次 槇谷 鉄筋コンクリート柱の補強構造
CN101220639B (zh) * 2003-10-21 2011-06-08 湖南邱则有专利战略策划有限公司 一种现浇砼空心楼盖
CN101220640B (zh) * 2003-10-21 2011-06-08 湖南邱则有专利战略策划有限公司 一种现浇砼空心楼盖
CN101220634B (zh) * 2003-10-21 2012-09-12 湖南邱则有专利战略策划有限公司 一种现浇砼空心楼盖
JP5214864B2 (ja) * 2006-09-05 2013-06-19 新日鉄住金マテリアルズ株式会社 構造物の補強方法
US9782951B2 (en) * 2007-07-18 2017-10-10 The Boeing Company Composite structure having ceramic truss core and method for making the same
US8431214B2 (en) * 2007-07-31 2013-04-30 The Boeing Company Composite structure having reinforced core and method of making same
US8512853B2 (en) * 2007-07-31 2013-08-20 The Boeing Company Composite structure having reinforced core
JP4702337B2 (ja) * 2007-08-13 2011-06-15 株式会社大林組 開口部を備える補強対象物の補強構造及び方法
FR2948712B1 (fr) * 2009-08-03 2015-03-06 Soletanche Freyssinet Procede de renforcement d'une structure de construction, et ouvrage ainsi renforce
EP2447446A1 (fr) * 2010-10-28 2012-05-02 Sika Technology AG Ancrage terminal d'éléments de traction sur des supports en béton armé
JP5764415B2 (ja) * 2011-07-08 2015-08-19 司産業株式会社 コンクリート構造物の補強パネルと補強方法
US20130119191A1 (en) * 2011-11-10 2013-05-16 General Electric Company Load-bearing structures for aircraft engines and processes therefor
US20140205800A1 (en) * 2013-01-23 2014-07-24 Milliken & Company Externally bonded fiber reinforced polymer strengthening system
JP6051073B2 (ja) * 2013-02-22 2016-12-21 三菱樹脂インフラテック株式会社 アンカーとその製造方法、定着具及びこれを用いた構造物の補強方法と補強された構造物
US9205629B2 (en) 2013-03-15 2015-12-08 Ann Livingston-Peters Composite structure with a flexible section forming a hinge
CA2914506C (fr) * 2013-06-06 2022-09-06 Sika Technology Ag Systeme et procede de renforcement de structures de support
US9784004B2 (en) * 2014-08-19 2017-10-10 Kulstoff Composite Products, LLC Fiber reinforced anchors and connectors, methods of making anchors and connectors, and processes for reinforcing a structure
US11236508B2 (en) * 2018-12-12 2022-02-01 Structural Technologies Ip, Llc Fiber reinforced composite cord for repair of concrete end members

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US5085928A (en) * 1989-04-06 1992-02-04 E. I. Dupont De Nemours And Company Fiber reinforced composites comprising uni-directional fiber layers and aramid spunlaced fabric layers
US6519909B1 (en) * 1994-03-04 2003-02-18 Norman C. Fawley Composite reinforcement for support columns
JPH0842060A (ja) * 1994-08-02 1996-02-13 Komatsu Kasei Kk Ｆｒｐ製コンクリート補強筋
JPH10512635A (ja) 1995-01-09 1998-12-02 アイトゲヌーシシエ マテリアルプルーフングス−ウント フォルシュングスアンスタルト エ−エムペーアー 補強平板の固定方法
US5657595A (en) * 1995-06-29 1997-08-19 Hexcel-Fyfe Co., L.L.C. Fabric reinforced beam and column connections

Also Published As

Publication number Publication date
AU720157B2 (en) 2000-05-25
US6511727B1 (en) 2003-01-28
JP3489839B2 (ja) 2004-01-26
EP0954660A1 (fr) 1999-11-10
ATE202614T1 (de) 2001-07-15
WO1998032933A1 (fr) 1998-07-30
JP2000513059A (ja) 2000-10-03
AU6614698A (en) 1998-08-18

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